Auth bypass in Humhub Cfiles

CVE-2025-65963

Files is a module for managing files inside spaces and user profiles. Prior to versions 0.16.11 and 0.17.2, insufficient authorization checks allow non-member users to create new folders, up- and download files as a ZIP archive in public spaces. Private spaces are not affected. This issue has been patched in versions 0.16.11 and 0.17.2.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (6.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-65963: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-65963?
CVE-2025-65963 is a medium-severity vulnerability in Humhub Cfiles, classified under Improper Access Control. CVSS score: 5.4/10. Published 2025-11-26.
How severe is CVE-2025-65963?
Medium severity. CVSS v3 base score is 5.4 out of 10.